linux/sound/pci/via82xx.c
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   1/*
   2 *   ALSA driver for VIA VT82xx (South Bridge)
   3 *
   4 *   VT82C686A/B/C, VT8233A/C, VT8235
   5 *
   6 *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   7 *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
   8 *                    2002 Takashi Iwai <tiwai@suse.de>
   9 *
  10 *   This program is free software; you can redistribute it and/or modify
  11 *   it under the terms of the GNU General Public License as published by
  12 *   the Free Software Foundation; either version 2 of the License, or
  13 *   (at your option) any later version.
  14 *
  15 *   This program is distributed in the hope that it will be useful,
  16 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 *   GNU General Public License for more details.
  19 *
  20 *   You should have received a copy of the GNU General Public License
  21 *   along with this program; if not, write to the Free Software
  22 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23 *
  24 */
  25
  26/*
  27 * Changes:
  28 *
  29 * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
  30 *      - use the DSX channels for the first pcm playback.
  31 *        (on VIA8233, 8233C and 8235 only)
  32 *        this will allow you play simultaneously up to 4 streams.
  33 *        multi-channel playback is assigned to the second device
  34 *        on these chips.
  35 *      - support the secondary capture (on VIA8233/C,8235)
  36 *      - SPDIF support
  37 *        the DSX3 channel can be used for SPDIF output.
  38 *        on VIA8233A, this channel is assigned to the second pcm
  39 *        playback.
  40 *        the card config of alsa-lib will assign the correct
  41 *        device for applications.
  42 *      - clean up the code, separate low-level initialization
  43 *        routines for each chipset.
  44 *
  45 * Sep. 26, 2005        Karsten Wiese <annabellesgarden@yahoo.de>
  46 *      - Optimize position calculation for the 823x chips. 
  47 */
  48
  49#include <asm/io.h>
  50#include <linux/delay.h>
  51#include <linux/interrupt.h>
  52#include <linux/init.h>
  53#include <linux/pci.h>
  54#include <linux/slab.h>
  55#include <linux/gameport.h>
  56#include <linux/moduleparam.h>
  57#include <sound/core.h>
  58#include <sound/pcm.h>
  59#include <sound/pcm_params.h>
  60#include <sound/info.h>
  61#include <sound/tlv.h>
  62#include <sound/ac97_codec.h>
  63#include <sound/mpu401.h>
  64#include <sound/initval.h>
  65
  66#if 0
  67#define POINTER_DEBUG
  68#endif
  69
  70MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  71MODULE_DESCRIPTION("VIA VT82xx audio");
  72MODULE_LICENSE("GPL");
  73MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  74
  75#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  76#define SUPPORT_JOYSTICK 1
  77#endif
  78
  79static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  80static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  81static long mpu_port;
  82#ifdef SUPPORT_JOYSTICK
  83static int joystick;
  84#endif
  85static int ac97_clock = 48000;
  86static char *ac97_quirk;
  87static int dxs_support;
  88static int nodelay;
  89
  90module_param(index, int, 0444);
  91MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  92module_param(id, charp, 0444);
  93MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  94module_param(mpu_port, long, 0444);
  95MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  96#ifdef SUPPORT_JOYSTICK
  97module_param(joystick, bool, 0444);
  98MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  99#endif
 100module_param(ac97_clock, int, 0444);
 101MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 102module_param(ac97_quirk, charp, 0444);
 103MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 104module_param(dxs_support, int, 0444);
 105MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA, 5 = enable any sample rate)");
 106module_param(nodelay, int, 0444);
 107MODULE_PARM_DESC(nodelay, "Disable 500ms init delay");
 108
 109/* just for backward compatibility */
 110static int enable;
 111module_param(enable, bool, 0444);
 112
 113
 114/* revision numbers for via686 */
 115#define VIA_REV_686_A           0x10
 116#define VIA_REV_686_B           0x11
 117#define VIA_REV_686_C           0x12
 118#define VIA_REV_686_D           0x13
 119#define VIA_REV_686_E           0x14
 120#define VIA_REV_686_H           0x20
 121
 122/* revision numbers for via8233 */
 123#define VIA_REV_PRE_8233        0x10    /* not in market */
 124#define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 125#define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 126#define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 127#define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 128#define VIA_REV_8237            0x60
 129#define VIA_REV_8251            0x70
 130
 131/*
 132 *  Direct registers
 133 */
 134
 135#define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 136#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 137
 138/* common offsets */
 139#define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 140#define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 141#define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
 142#define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 143#define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 144#define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 145#define   VIA_REG_STAT_EOL              0x02    /* RWC */
 146#define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 147#define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 148#define   VIA_REG_CTRL_START            0x80    /* WO */
 149#define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 150#define   VIA_REG_CTRL_AUTOSTART        0x20
 151#define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 152#define   VIA_REG_CTRL_INT_STOP         0x04            
 153#define   VIA_REG_CTRL_INT_EOL          0x02
 154#define   VIA_REG_CTRL_INT_FLAG         0x01
 155#define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 156#define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 157#define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 158#define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 159#define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 160#define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 161#define   VIA_REG_TYPE_INT_LLINE        0x00
 162#define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 163#define   VIA_REG_TYPE_INT_LESSONE      0x08
 164#define   VIA_REG_TYPE_INT_MASK         0x0c
 165#define   VIA_REG_TYPE_INT_EOL          0x02
 166#define   VIA_REG_TYPE_INT_FLAG         0x01
 167#define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 168#define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 169#define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 170#define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 171#define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 172#define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 173#define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 174
 175#define DEFINE_VIA_REGSET(name,val) \
 176enum {\
 177        VIA_REG_##name##_STATUS         = (val),\
 178        VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 179        VIA_REG_##name##_TYPE           = (val) + 0x02,\
 180        VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 181        VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 182        VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 183        VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 184}
 185
 186/* playback block */
 187DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 188DEFINE_VIA_REGSET(CAPTURE, 0x10);
 189DEFINE_VIA_REGSET(FM, 0x20);
 190
 191/* AC'97 */
 192#define VIA_REG_AC97                    0x80    /* dword */
 193#define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 194#define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 195#define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 196#define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 197#define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 198#define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 199#define   VIA_REG_AC97_BUSY             (1<<24)
 200#define   VIA_REG_AC97_READ             (1<<23)
 201#define   VIA_REG_AC97_CMD_SHIFT        16
 202#define   VIA_REG_AC97_CMD_MASK         0x7e
 203#define   VIA_REG_AC97_DATA_SHIFT       0
 204#define   VIA_REG_AC97_DATA_MASK        0xffff
 205
 206#define VIA_REG_SGD_SHADOW              0x84    /* dword */
 207/* via686 */
 208#define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 209#define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 210#define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 211#define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 212#define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 213#define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 214#define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 215#define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 216#define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 217#define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 218#define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 219#define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 220/* via8233 */
 221#define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 222#define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 223#define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 224#define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 225#define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 226#define   VIA8233_REG_SGD_CHAN_SDX      0
 227#define   VIA8233_REG_SGD_CHAN_MULTI    4
 228#define   VIA8233_REG_SGD_CHAN_REC      6
 229#define   VIA8233_REG_SGD_CHAN_REC1     7
 230
 231#define VIA_REG_GPI_STATUS              0x88
 232#define VIA_REG_GPI_INTR                0x8c
 233
 234/* multi-channel and capture registers for via8233 */
 235DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 236DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 237
 238/* via8233-specific registers */
 239#define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 240#define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 241#define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 242#define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 243#define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 244#define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 245#define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 246#define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 247
 248#define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 249
 250#define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 251#define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 252#define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 253#define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 254
 255#define VIA_TBL_BIT_FLAG        0x40000000
 256#define VIA_TBL_BIT_EOL         0x80000000
 257
 258/* pci space */
 259#define VIA_ACLINK_STAT         0x40
 260#define  VIA_ACLINK_C11_READY   0x20
 261#define  VIA_ACLINK_C10_READY   0x10
 262#define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 263#define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 264#define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 265#define VIA_ACLINK_CTRL         0x41
 266#define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 267#define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 268#define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 269#define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 270#define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 271#define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 272#define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 273#define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 274#define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 275                                 VIA_ACLINK_CTRL_RESET|\
 276                                 VIA_ACLINK_CTRL_PCM|\
 277                                 VIA_ACLINK_CTRL_VRA)
 278#define VIA_FUNC_ENABLE         0x42
 279#define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 280#define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 281#define  VIA_FUNC_RX2C_WRITE    0x20
 282#define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 283#define  VIA_FUNC_ENABLE_GAME   0x08
 284#define  VIA_FUNC_ENABLE_FM     0x04
 285#define  VIA_FUNC_ENABLE_MIDI   0x02
 286#define  VIA_FUNC_ENABLE_SB     0x01
 287#define VIA_PNP_CONTROL         0x43
 288#define VIA_FM_NMI_CTRL         0x48
 289#define VIA8233_VOLCHG_CTRL     0x48
 290#define VIA8233_SPDIF_CTRL      0x49
 291#define  VIA8233_SPDIF_DX3      0x08
 292#define  VIA8233_SPDIF_SLOT_MASK        0x03
 293#define  VIA8233_SPDIF_SLOT_1011        0x00
 294#define  VIA8233_SPDIF_SLOT_34          0x01
 295#define  VIA8233_SPDIF_SLOT_78          0x02
 296#define  VIA8233_SPDIF_SLOT_69          0x03
 297
 298/*
 299 */
 300
 301#define VIA_DXS_AUTO    0
 302#define VIA_DXS_ENABLE  1
 303#define VIA_DXS_DISABLE 2
 304#define VIA_DXS_48K     3
 305#define VIA_DXS_NO_VRA  4
 306#define VIA_DXS_SRC     5
 307
 308
 309/*
 310 * pcm stream
 311 */
 312
 313struct snd_via_sg_table {
 314        unsigned int offset;
 315        unsigned int size;
 316} ;
 317
 318#define VIA_TABLE_SIZE  255
 319#define VIA_MAX_BUFSIZE (1<<24)
 320
 321struct viadev {
 322        unsigned int reg_offset;
 323        unsigned long port;
 324        int direction;  /* playback = 0, capture = 1 */
 325        struct snd_pcm_substream *substream;
 326        int running;
 327        unsigned int tbl_entries; /* # descriptors */
 328        struct snd_dma_buffer table;
 329        struct snd_via_sg_table *idx_table;
 330        /* for recovery from the unexpected pointer */
 331        unsigned int lastpos;
 332        unsigned int fragsize;
 333        unsigned int bufsize;
 334        unsigned int bufsize2;
 335        int hwptr_done;         /* processed frame position in the buffer */
 336        int in_interrupt;
 337        int shadow_shift;
 338};
 339
 340
 341enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 342enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 343
 344#define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 345
 346struct via_rate_lock {
 347        spinlock_t lock;
 348        int rate;
 349        int used;
 350};
 351
 352struct via82xx {
 353        int irq;
 354
 355        unsigned long port;
 356        struct resource *mpu_res;
 357        int chip_type;
 358        unsigned char revision;
 359
 360        unsigned char old_legacy;
 361        unsigned char old_legacy_cfg;
 362#ifdef CONFIG_PM
 363        unsigned char legacy_saved;
 364        unsigned char legacy_cfg_saved;
 365        unsigned char spdif_ctrl_saved;
 366        unsigned char capture_src_saved[2];
 367        unsigned int mpu_port_saved;
 368#endif
 369
 370        unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 371        unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 372
 373        unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 374
 375        struct pci_dev *pci;
 376        struct snd_card *card;
 377
 378        unsigned int num_devs;
 379        unsigned int playback_devno, multi_devno, capture_devno;
 380        struct viadev devs[VIA_MAX_DEVS];
 381        struct via_rate_lock rates[2]; /* playback and capture */
 382        unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 383        unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 384        unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 385        unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 386
 387        struct snd_pcm *pcms[2];
 388        struct snd_rawmidi *rmidi;
 389        struct snd_kcontrol *dxs_controls[4];
 390
 391        struct snd_ac97_bus *ac97_bus;
 392        struct snd_ac97 *ac97;
 393        unsigned int ac97_clock;
 394        unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 395
 396        spinlock_t reg_lock;
 397        struct snd_info_entry *proc_entry;
 398
 399#ifdef SUPPORT_JOYSTICK
 400        struct gameport *gameport;
 401#endif
 402};
 403
 404static struct pci_device_id snd_via82xx_ids[] = {
 405        /* 0x1106, 0x3058 */
 406        { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C686_5), TYPE_CARD_VIA686, },    /* 686A */
 407        /* 0x1106, 0x3059 */
 408        { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8233_5), TYPE_CARD_VIA8233, },     /* VT8233 */
 409        { 0, }
 410};
 411
 412MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 413
 414/*
 415 */
 416
 417/*
 418 * allocate and initialize the descriptor buffers
 419 * periods = number of periods
 420 * fragsize = period size in bytes
 421 */
 422static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 423                           struct pci_dev *pci,
 424                           unsigned int periods, unsigned int fragsize)
 425{
 426        unsigned int i, idx, ofs, rest;
 427        struct via82xx *chip = snd_pcm_substream_chip(substream);
 428
 429        if (dev->table.area == NULL) {
 430                /* the start of each lists must be aligned to 8 bytes,
 431                 * but the kernel pages are much bigger, so we don't care
 432                 */
 433                if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 434                                        PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 435                                        &dev->table) < 0)
 436                        return -ENOMEM;
 437        }
 438        if (! dev->idx_table) {
 439                dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 440                if (! dev->idx_table)
 441                        return -ENOMEM;
 442        }
 443
 444        /* fill the entries */
 445        idx = 0;
 446        ofs = 0;
 447        for (i = 0; i < periods; i++) {
 448                rest = fragsize;
 449                /* fill descriptors for a period.
 450                 * a period can be split to several descriptors if it's
 451                 * over page boundary.
 452                 */
 453                do {
 454                        unsigned int r;
 455                        unsigned int flag;
 456                        unsigned int addr;
 457
 458                        if (idx >= VIA_TABLE_SIZE) {
 459                                snd_printk(KERN_ERR "via82xx: too much table size!\n");
 460                                return -EINVAL;
 461                        }
 462                        addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 463                        ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
 464                        r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
 465                        rest -= r;
 466                        if (! rest) {
 467                                if (i == periods - 1)
 468                                        flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 469                                else
 470                                        flag = VIA_TBL_BIT_FLAG; /* period boundary */
 471                        } else
 472                                flag = 0; /* period continues to the next */
 473                        /*
 474                        printk(KERN_DEBUG "via: tbl %d: at %d  size %d "
 475                               "(rest %d)\n", idx, ofs, r, rest);
 476                        */
 477                        ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 478                        dev->idx_table[idx].offset = ofs;
 479                        dev->idx_table[idx].size = r;
 480                        ofs += r;
 481                        idx++;
 482                } while (rest > 0);
 483        }
 484        dev->tbl_entries = idx;
 485        dev->bufsize = periods * fragsize;
 486        dev->bufsize2 = dev->bufsize / 2;
 487        dev->fragsize = fragsize;
 488        return 0;
 489}
 490
 491
 492static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 493                           struct pci_dev *pci)
 494{
 495        if (dev->table.area) {
 496                snd_dma_free_pages(&dev->table);
 497                dev->table.area = NULL;
 498        }
 499        kfree(dev->idx_table);
 500        dev->idx_table = NULL;
 501        return 0;
 502}
 503
 504/*
 505 *  Basic I/O
 506 */
 507
 508static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 509{
 510        return inl(VIAREG(chip, AC97));
 511}
 512 
 513static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 514{
 515        outl(val, VIAREG(chip, AC97));
 516}
 517 
 518static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 519{
 520        unsigned int timeout = 1000;    /* 1ms */
 521        unsigned int val;
 522        
 523        while (timeout-- > 0) {
 524                udelay(1);
 525                if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 526                        return val & 0xffff;
 527        }
 528        snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
 529                   secondary, snd_via82xx_codec_xread(chip));
 530        return -EIO;
 531}
 532 
 533static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 534{
 535        unsigned int timeout = 1000;    /* 1ms */
 536        unsigned int val, val1;
 537        unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 538                                         VIA_REG_AC97_SECONDARY_VALID;
 539        
 540        while (timeout-- > 0) {
 541                val = snd_via82xx_codec_xread(chip);
 542                val1 = val & (VIA_REG_AC97_BUSY | stat);
 543                if (val1 == stat)
 544                        return val & 0xffff;
 545                udelay(1);
 546        }
 547        return -EIO;
 548}
 549 
 550static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 551{
 552        struct via82xx *chip = ac97->private_data;
 553        int err;
 554        err = snd_via82xx_codec_ready(chip, ac97->num);
 555        /* here we need to wait fairly for long time.. */
 556        if (!nodelay)
 557                msleep(500);
 558}
 559
 560static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 561                                    unsigned short reg,
 562                                    unsigned short val)
 563{
 564        struct via82xx *chip = ac97->private_data;
 565        unsigned int xval;
 566
 567        xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 568        xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 569        xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 570        xval |= val << VIA_REG_AC97_DATA_SHIFT;
 571        snd_via82xx_codec_xwrite(chip, xval);
 572        snd_via82xx_codec_ready(chip, ac97->num);
 573}
 574
 575static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 576{
 577        struct via82xx *chip = ac97->private_data;
 578        unsigned int xval, val = 0xffff;
 579        int again = 0;
 580
 581        xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 582        xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 583        xval |= VIA_REG_AC97_READ;
 584        xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 585        while (1) {
 586                if (again++ > 3) {
 587                        snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
 588                                   ac97->num, snd_via82xx_codec_xread(chip));
 589                        return 0xffff;
 590                }
 591                snd_via82xx_codec_xwrite(chip, xval);
 592                udelay (20);
 593                if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 594                        udelay(25);
 595                        val = snd_via82xx_codec_xread(chip);
 596                        break;
 597                }
 598        }
 599        return val & 0xffff;
 600}
 601
 602static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 603{
 604        outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 605             VIADEV_REG(viadev, OFFSET_CONTROL));
 606        inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 607        udelay(50);
 608        /* disable interrupts */
 609        outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 610        /* clear interrupts */
 611        outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 612        outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 613        // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 614        viadev->lastpos = 0;
 615        viadev->hwptr_done = 0;
 616}
 617
 618
 619/*
 620 *  Interrupt handler
 621 *  Used for 686 and 8233A
 622 */
 623static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 624{
 625        struct via82xx *chip = dev_id;
 626        unsigned int status;
 627        unsigned int i;
 628
 629        status = inl(VIAREG(chip, SGD_SHADOW));
 630        if (! (status & chip->intr_mask)) {
 631                if (chip->rmidi)
 632                        /* check mpu401 interrupt */
 633                        return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 634                return IRQ_NONE;
 635        }
 636
 637        /* check status for each stream */
 638        spin_lock(&chip->reg_lock);
 639        for (i = 0; i < chip->num_devs; i++) {
 640                struct viadev *viadev = &chip->devs[i];
 641                unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 642                if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 643                        continue;
 644                if (viadev->substream && viadev->running) {
 645                        /*
 646                         * Update hwptr_done based on 'period elapsed'
 647                         * interrupts. We'll use it, when the chip returns 0 
 648                         * for OFFSET_CURR_COUNT.
 649                         */
 650                        if (c_status & VIA_REG_STAT_EOL)
 651                                viadev->hwptr_done = 0;
 652                        else
 653                                viadev->hwptr_done += viadev->fragsize;
 654                        viadev->in_interrupt = c_status;
 655                        spin_unlock(&chip->reg_lock);
 656                        snd_pcm_period_elapsed(viadev->substream);
 657                        spin_lock(&chip->reg_lock);
 658                        viadev->in_interrupt = 0;
 659                }
 660                outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 661        }
 662        spin_unlock(&chip->reg_lock);
 663        return IRQ_HANDLED;
 664}
 665
 666/*
 667 *  Interrupt handler
 668 */
 669static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 670{
 671        struct via82xx *chip = dev_id;
 672        unsigned int status;
 673        unsigned int i;
 674        int irqreturn = 0;
 675
 676        /* check status for each stream */
 677        spin_lock(&chip->reg_lock);
 678        status = inl(VIAREG(chip, SGD_SHADOW));
 679
 680        for (i = 0; i < chip->num_devs; i++) {
 681                struct viadev *viadev = &chip->devs[i];
 682                struct snd_pcm_substream *substream;
 683                unsigned char c_status, shadow_status;
 684
 685                shadow_status = (status >> viadev->shadow_shift) &
 686                        (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 687                         VIA_REG_STAT_FLAG);
 688                c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 689                if (!c_status)
 690                        continue;
 691
 692                substream = viadev->substream;
 693                if (substream && viadev->running) {
 694                        /*
 695                         * Update hwptr_done based on 'period elapsed'
 696                         * interrupts. We'll use it, when the chip returns 0 
 697                         * for OFFSET_CURR_COUNT.
 698                         */
 699                        if (c_status & VIA_REG_STAT_EOL)
 700                                viadev->hwptr_done = 0;
 701                        else
 702                                viadev->hwptr_done += viadev->fragsize;
 703                        viadev->in_interrupt = c_status;
 704                        if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 705                                viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 706                        spin_unlock(&chip->reg_lock);
 707
 708                        snd_pcm_period_elapsed(substream);
 709
 710                        spin_lock(&chip->reg_lock);
 711                        viadev->in_interrupt = 0;
 712                }
 713                outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 714                irqreturn = 1;
 715        }
 716        spin_unlock(&chip->reg_lock);
 717        return IRQ_RETVAL(irqreturn);
 718}
 719
 720/*
 721 *  PCM callbacks
 722 */
 723
 724/*
 725 * trigger callback
 726 */
 727static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 728{
 729        struct via82xx *chip = snd_pcm_substream_chip(substream);
 730        struct viadev *viadev = substream->runtime->private_data;
 731        unsigned char val;
 732
 733        if (chip->chip_type != TYPE_VIA686)
 734                val = VIA_REG_CTRL_INT;
 735        else
 736                val = 0;
 737        switch (cmd) {
 738        case SNDRV_PCM_TRIGGER_START:
 739        case SNDRV_PCM_TRIGGER_RESUME:
 740                val |= VIA_REG_CTRL_START;
 741                viadev->running = 1;
 742                break;
 743        case SNDRV_PCM_TRIGGER_STOP:
 744        case SNDRV_PCM_TRIGGER_SUSPEND:
 745                val = VIA_REG_CTRL_TERMINATE;
 746                viadev->running = 0;
 747                break;
 748        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 749                val |= VIA_REG_CTRL_PAUSE;
 750                viadev->running = 0;
 751                break;
 752        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 753                viadev->running = 1;
 754                break;
 755        default:
 756                return -EINVAL;
 757        }
 758        outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 759        if (cmd == SNDRV_PCM_TRIGGER_STOP)
 760                snd_via82xx_channel_reset(chip, viadev);
 761        return 0;
 762}
 763
 764
 765/*
 766 * pointer callbacks
 767 */
 768
 769/*
 770 * calculate the linear position at the given sg-buffer index and the rest count
 771 */
 772
 773#define check_invalid_pos(viadev,pos) \
 774        ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 775                                     viadev->lastpos < viadev->bufsize2))
 776
 777static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
 778                                           unsigned int count)
 779{
 780        unsigned int size, base, res;
 781
 782        size = viadev->idx_table[idx].size;
 783        base = viadev->idx_table[idx].offset;
 784        res = base + size - count;
 785        if (res >= viadev->bufsize)
 786                res -= viadev->bufsize;
 787
 788        /* check the validity of the calculated position */
 789        if (size < count) {
 790                snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 791                           (int)size, (int)count);
 792                res = viadev->lastpos;
 793        } else {
 794                if (! count) {
 795                        /* Some mobos report count = 0 on the DMA boundary,
 796                         * i.e. count = size indeed.
 797                         * Let's check whether this step is above the expected size.
 798                         */
 799                        int delta = res - viadev->lastpos;
 800                        if (delta < 0)
 801                                delta += viadev->bufsize;
 802                        if ((unsigned int)delta > viadev->fragsize)
 803                                res = base;
 804                }
 805                if (check_invalid_pos(viadev, res)) {
 806#ifdef POINTER_DEBUG
 807                        printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
 808                               "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
 809                               "count = 0x%x\n", idx, viadev->tbl_entries,
 810                               viadev->lastpos, viadev->bufsize2,
 811                               viadev->idx_table[idx].offset,
 812                               viadev->idx_table[idx].size, count);
 813#endif
 814                        /* count register returns full size when end of buffer is reached */
 815                        res = base + size;
 816                        if (check_invalid_pos(viadev, res)) {
 817                                snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
 818                                           "using last valid pointer\n");
 819                                res = viadev->lastpos;
 820                        }
 821                }
 822        }
 823        return res;
 824}
 825
 826/*
 827 * get the current pointer on via686
 828 */
 829static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 830{
 831        struct via82xx *chip = snd_pcm_substream_chip(substream);
 832        struct viadev *viadev = substream->runtime->private_data;
 833        unsigned int idx, ptr, count, res;
 834
 835        if (snd_BUG_ON(!viadev->tbl_entries))
 836                return 0;
 837        if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 838                return 0;
 839
 840        spin_lock(&chip->reg_lock);
 841        count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 842        /* The via686a does not have the current index register,
 843         * so we need to calculate the index from CURR_PTR.
 844         */
 845        ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 846        if (ptr <= (unsigned int)viadev->table.addr)
 847                idx = 0;
 848        else /* CURR_PTR holds the address + 8 */
 849                idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 850        res = calc_linear_pos(viadev, idx, count);
 851        viadev->lastpos = res; /* remember the last position */
 852        spin_unlock(&chip->reg_lock);
 853
 854        return bytes_to_frames(substream->runtime, res);
 855}
 856
 857/*
 858 * get the current pointer on via823x
 859 */
 860static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 861{
 862        struct via82xx *chip = snd_pcm_substream_chip(substream);
 863        struct viadev *viadev = substream->runtime->private_data;
 864        unsigned int idx, count, res;
 865        int status;
 866        
 867        if (snd_BUG_ON(!viadev->tbl_entries))
 868                return 0;
 869
 870        spin_lock(&chip->reg_lock);
 871        count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 872        status = viadev->in_interrupt;
 873        if (!status)
 874                status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 875
 876        /* An apparent bug in the 8251 is worked around by sending a 
 877         * REG_CTRL_START. */
 878        if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 879                snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 880
 881        if (!(status & VIA_REG_STAT_ACTIVE)) {
 882                res = 0;
 883                goto unlock;
 884        }
 885        if (count & 0xffffff) {
 886                idx = count >> 24;
 887                if (idx >= viadev->tbl_entries) {
 888#ifdef POINTER_DEBUG
 889                        printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
 890                               viadev->tbl_entries);
 891#endif
 892                        res = viadev->lastpos;
 893                } else {
 894                        count &= 0xffffff;
 895                        res = calc_linear_pos(viadev, idx, count);
 896                }
 897        } else {
 898                res = viadev->hwptr_done;
 899                if (!viadev->in_interrupt) {
 900                        if (status & VIA_REG_STAT_EOL) {
 901                                res = 0;
 902                        } else
 903                                if (status & VIA_REG_STAT_FLAG) {
 904                                        res += viadev->fragsize;
 905                                }
 906                }
 907        }                           
 908unlock:
 909        viadev->lastpos = res;
 910        spin_unlock(&chip->reg_lock);
 911
 912        return bytes_to_frames(substream->runtime, res);
 913}
 914
 915
 916/*
 917 * hw_params callback:
 918 * allocate the buffer and build up the buffer description table
 919 */
 920static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 921                                 struct snd_pcm_hw_params *hw_params)
 922{
 923        struct via82xx *chip = snd_pcm_substream_chip(substream);
 924        struct viadev *viadev = substream->runtime->private_data;
 925        int err;
 926
 927        err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 928        if (err < 0)
 929                return err;
 930        err = build_via_table(viadev, substream, chip->pci,
 931                              params_periods(hw_params),
 932                              params_period_bytes(hw_params));
 933        if (err < 0)
 934                return err;
 935
 936        return 0;
 937}
 938
 939/*
 940 * hw_free callback:
 941 * clean up the buffer description table and release the buffer
 942 */
 943static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 944{
 945        struct via82xx *chip = snd_pcm_substream_chip(substream);
 946        struct viadev *viadev = substream->runtime->private_data;
 947
 948        clean_via_table(viadev, substream, chip->pci);
 949        snd_pcm_lib_free_pages(substream);
 950        return 0;
 951}
 952
 953
 954/*
 955 * set up the table pointer
 956 */
 957static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 958{
 959        snd_via82xx_codec_ready(chip, 0);
 960        outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 961        udelay(20);
 962        snd_via82xx_codec_ready(chip, 0);
 963}
 964
 965/*
 966 * prepare callback for playback and capture on via686
 967 */
 968static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 969                                struct snd_pcm_runtime *runtime)
 970{
 971        snd_via82xx_channel_reset(chip, viadev);
 972        /* this must be set after channel_reset */
 973        snd_via82xx_set_table_ptr(chip, viadev);
 974        outb(VIA_REG_TYPE_AUTOSTART |
 975             (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 976             (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 977             ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 978             VIA_REG_TYPE_INT_EOL |
 979             VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 980}
 981
 982static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 983{
 984        struct via82xx *chip = snd_pcm_substream_chip(substream);
 985        struct viadev *viadev = substream->runtime->private_data;
 986        struct snd_pcm_runtime *runtime = substream->runtime;
 987
 988        snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 989        snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 990        via686_setup_format(chip, viadev, runtime);
 991        return 0;
 992}
 993
 994static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 995{
 996        struct via82xx *chip = snd_pcm_substream_chip(substream);
 997        struct viadev *viadev = substream->runtime->private_data;
 998        struct snd_pcm_runtime *runtime = substream->runtime;
 999
1000        snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1001        via686_setup_format(chip, viadev, runtime);
1002        return 0;
1003}
1004
1005/*
1006 * lock the current rate
1007 */
1008static int via_lock_rate(struct via_rate_lock *rec, int rate)
1009{
1010        int changed = 0;
1011
1012        spin_lock_irq(&rec->lock);
1013        if (rec->rate != rate) {
1014                if (rec->rate && rec->used > 1) /* already set */
1015                        changed = -EINVAL;
1016                else {
1017                        rec->rate = rate;
1018                        changed = 1;
1019                }
1020        }
1021        spin_unlock_irq(&rec->lock);
1022        return changed;
1023}
1024
1025/*
1026 * prepare callback for DSX playback on via823x
1027 */
1028static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1029{
1030        struct via82xx *chip = snd_pcm_substream_chip(substream);
1031        struct viadev *viadev = substream->runtime->private_data;
1032        struct snd_pcm_runtime *runtime = substream->runtime;
1033        int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1034        int rate_changed;
1035        u32 rbits;
1036
1037        if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1038                return rate_changed;
1039        if (rate_changed)
1040                snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1041                                  chip->no_vra ? 48000 : runtime->rate);
1042        if (chip->spdif_on && viadev->reg_offset == 0x30)
1043                snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1044
1045        if (runtime->rate == 48000)
1046                rbits = 0xfffff;
1047        else
1048                rbits = (0x100000 / 48000) * runtime->rate +
1049                        ((0x100000 % 48000) * runtime->rate) / 48000;
1050        snd_BUG_ON(rbits & ~0xfffff);
1051        snd_via82xx_channel_reset(chip, viadev);
1052        snd_via82xx_set_table_ptr(chip, viadev);
1053        outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1054             VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1055        outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1056             VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1057        outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1058             (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1059             rbits | /* rate */
1060             0xff000000,    /* STOP index is never reached */
1061             VIADEV_REG(viadev, OFFSET_STOP_IDX));
1062        udelay(20);
1063        snd_via82xx_codec_ready(chip, 0);
1064        return 0;
1065}
1066
1067/*
1068 * prepare callback for multi-channel playback on via823x
1069 */
1070static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1071{
1072        struct via82xx *chip = snd_pcm_substream_chip(substream);
1073        struct viadev *viadev = substream->runtime->private_data;
1074        struct snd_pcm_runtime *runtime = substream->runtime;
1075        unsigned int slots;
1076        int fmt;
1077
1078        if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1079                return -EINVAL;
1080        snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1081        snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1082        snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1083        snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1084        snd_via82xx_channel_reset(chip, viadev);
1085        snd_via82xx_set_table_ptr(chip, viadev);
1086
1087        fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1088                VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1089        fmt |= runtime->channels << 4;
1090        outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1091#if 0
1092        if (chip->revision == VIA_REV_8233A)
1093                slots = 0;
1094        else
1095#endif
1096        {
1097                /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1098                /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1099                switch (runtime->channels) {
1100                case 1: slots = (1<<0) | (1<<4); break;
1101                case 2: slots = (1<<0) | (2<<4); break;
1102                case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1103                case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1104                case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1105                case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1106                default: slots = 0; break;
1107                }
1108        }
1109        /* STOP index is never reached */
1110        outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1111        udelay(20);
1112        snd_via82xx_codec_ready(chip, 0);
1113        return 0;
1114}
1115
1116/*
1117 * prepare callback for capture on via823x
1118 */
1119static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1120{
1121        struct via82xx *chip = snd_pcm_substream_chip(substream);
1122        struct viadev *viadev = substream->runtime->private_data;
1123        struct snd_pcm_runtime *runtime = substream->runtime;
1124
1125        if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1126                return -EINVAL;
1127        snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1128        snd_via82xx_channel_reset(chip, viadev);
1129        snd_via82xx_set_table_ptr(chip, viadev);
1130        outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1131        outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1132             (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1133             0xff000000,    /* STOP index is never reached */
1134             VIADEV_REG(viadev, OFFSET_STOP_IDX));
1135        udelay(20);
1136        snd_via82xx_codec_ready(chip, 0);
1137        return 0;
1138}
1139
1140
1141/*
1142 * pcm hardware definition, identical for both playback and capture
1143 */
1144static struct snd_pcm_hardware snd_via82xx_hw =
1145{
1146        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1147                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1148                                 SNDRV_PCM_INFO_MMAP_VALID |
1149                                 /* SNDRV_PCM_INFO_RESUME | */
1150                                 SNDRV_PCM_INFO_PAUSE),
1151        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1152        .rates =                SNDRV_PCM_RATE_48000,
1153        .rate_min =             48000,
1154        .rate_max =             48000,
1155        .channels_min =         1,
1156        .channels_max =         2,
1157        .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1158        .period_bytes_min =     32,
1159        .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1160        .periods_min =          2,
1161        .periods_max =          VIA_TABLE_SIZE / 2,
1162        .fifo_size =            0,
1163};
1164
1165
1166/*
1167 * open callback skeleton
1168 */
1169static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1170                                struct snd_pcm_substream *substream)
1171{
1172        struct snd_pcm_runtime *runtime = substream->runtime;
1173        int err;
1174        struct via_rate_lock *ratep;
1175
1176        runtime->hw = snd_via82xx_hw;
1177        
1178        /* set the hw rate condition */
1179        ratep = &chip->rates[viadev->direction];
1180        spin_lock_irq(&ratep->lock);
1181        ratep->used++;
1182        if (chip->spdif_on && viadev->reg_offset == 0x30) {
1183                /* DXS#3 and spdif is on */
1184                runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1185                snd_pcm_limit_hw_rates(runtime);
1186        } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1187                /* fixed DXS playback rate */
1188                runtime->hw.rates = SNDRV_PCM_RATE_48000;
1189                runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1190        } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1191                /* use full SRC capabilities of DXS */
1192                runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1193                                     SNDRV_PCM_RATE_8000_48000);
1194                runtime->hw.rate_min = 8000;
1195                runtime->hw.rate_max = 48000;
1196        } else if (! ratep->rate) {
1197                int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1198                runtime->hw.rates = chip->ac97->rates[idx];
1199                snd_pcm_limit_hw_rates(runtime);
1200        } else {
1201                /* a fixed rate */
1202                runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1203                runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1204        }
1205        spin_unlock_irq(&ratep->lock);
1206
1207        /* we may remove following constaint when we modify table entries
1208           in interrupt */
1209        if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1210                return err;
1211
1212        runtime->private_data = viadev;
1213        viadev->substream = substream;
1214
1215        return 0;
1216}
1217
1218
1219/*
1220 * open callback for playback on via686
1221 */
1222static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1223{
1224        struct via82xx *chip = snd_pcm_substream_chip(substream);
1225        struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1226        int err;
1227
1228        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1229                return err;
1230        return 0;
1231}
1232
1233/*
1234 * open callback for playback on via823x DXS
1235 */
1236static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1237{
1238        struct via82xx *chip = snd_pcm_substream_chip(substream);
1239        struct viadev *viadev;
1240        unsigned int stream;
1241        int err;
1242
1243        viadev = &chip->devs[chip->playback_devno + substream->number];
1244        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1245                return err;
1246        stream = viadev->reg_offset / 0x10;
1247        if (chip->dxs_controls[stream]) {
1248                chip->playback_volume[stream][0] = 0;
1249                chip->playback_volume[stream][1] = 0;
1250                chip->dxs_controls[stream]->vd[0].access &=
1251                        ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1252                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1253                               SNDRV_CTL_EVENT_MASK_INFO,
1254                               &chip->dxs_controls[stream]->id);
1255        }
1256        return 0;
1257}
1258
1259/*
1260 * open callback for playback on via823x multi-channel
1261 */
1262static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1263{
1264        struct via82xx *chip = snd_pcm_substream_chip(substream);
1265        struct viadev *viadev = &chip->devs[chip->multi_devno];
1266        int err;
1267        /* channels constraint for VIA8233A
1268         * 3 and 5 channels are not supported
1269         */
1270        static unsigned int channels[] = {
1271                1, 2, 4, 6
1272        };
1273        static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1274                .count = ARRAY_SIZE(channels),
1275                .list = channels,
1276                .mask = 0,
1277        };
1278
1279        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1280                return err;
1281        substream->runtime->hw.channels_max = 6;
1282        if (chip->revision == VIA_REV_8233A)
1283                snd_pcm_hw_constraint_list(substream->runtime, 0,
1284                                           SNDRV_PCM_HW_PARAM_CHANNELS,
1285                                           &hw_constraints_channels);
1286        return 0;
1287}
1288
1289/*
1290 * open callback for capture on via686 and via823x
1291 */
1292static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1293{
1294        struct via82xx *chip = snd_pcm_substream_chip(substream);
1295        struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1296
1297        return snd_via82xx_pcm_open(chip, viadev, substream);
1298}
1299
1300/*
1301 * close callback
1302 */
1303static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1304{
1305        struct via82xx *chip = snd_pcm_substream_chip(substream);
1306        struct viadev *viadev = substream->runtime->private_data;
1307        struct via_rate_lock *ratep;
1308
1309        /* release the rate lock */
1310        ratep = &chip->rates[viadev->direction];
1311        spin_lock_irq(&ratep->lock);
1312        ratep->used--;
1313        if (! ratep->used)
1314                ratep->rate = 0;
1315        spin_unlock_irq(&ratep->lock);
1316        if (! ratep->rate) {
1317                if (! viadev->direction) {
1318                        snd_ac97_update_power(chip->ac97,
1319                                              AC97_PCM_FRONT_DAC_RATE, 0);
1320                        snd_ac97_update_power(chip->ac97,
1321                                              AC97_PCM_SURR_DAC_RATE, 0);
1322                        snd_ac97_update_power(chip->ac97,
1323                                              AC97_PCM_LFE_DAC_RATE, 0);
1324                } else
1325                        snd_ac97_update_power(chip->ac97,
1326                                              AC97_PCM_LR_ADC_RATE, 0);
1327        }
1328        viadev->substream = NULL;
1329        return 0;
1330}
1331
1332static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1333{
1334        struct via82xx *chip = snd_pcm_substream_chip(substream);
1335        struct viadev *viadev = substream->runtime->private_data;
1336        unsigned int stream;
1337
1338        stream = viadev->reg_offset / 0x10;
1339        if (chip->dxs_controls[stream]) {
1340                chip->dxs_controls[stream]->vd[0].access |=
1341                        SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1342                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1343                               &chip->dxs_controls[stream]->id);
1344        }
1345        return snd_via82xx_pcm_close(substream);
1346}
1347
1348
1349/* via686 playback callbacks */
1350static struct snd_pcm_ops snd_via686_playback_ops = {
1351        .open =         snd_via686_playback_open,
1352        .close =        snd_via82xx_pcm_close,
1353        .ioctl =        snd_pcm_lib_ioctl,
1354        .hw_params =    snd_via82xx_hw_params,
1355        .hw_free =      snd_via82xx_hw_free,
1356        .prepare =      snd_via686_playback_prepare,
1357        .trigger =      snd_via82xx_pcm_trigger,
1358        .pointer =      snd_via686_pcm_pointer,
1359        .page =         snd_pcm_sgbuf_ops_page,
1360};
1361
1362/* via686 capture callbacks */
1363static struct snd_pcm_ops snd_via686_capture_ops = {
1364        .open =         snd_via82xx_capture_open,
1365        .close =        snd_via82xx_pcm_close,
1366        .ioctl =        snd_pcm_lib_ioctl,
1367        .hw_params =    snd_via82xx_hw_params,
1368        .hw_free =      snd_via82xx_hw_free,
1369        .prepare =      snd_via686_capture_prepare,
1370        .trigger =      snd_via82xx_pcm_trigger,
1371        .pointer =      snd_via686_pcm_pointer,
1372        .page =         snd_pcm_sgbuf_ops_page,
1373};
1374
1375/* via823x DSX playback callbacks */
1376static struct snd_pcm_ops snd_via8233_playback_ops = {
1377        .open =         snd_via8233_playback_open,
1378        .close =        snd_via8233_playback_close,
1379        .ioctl =        snd_pcm_lib_ioctl,
1380        .hw_params =    snd_via82xx_hw_params,
1381        .hw_free =      snd_via82xx_hw_free,
1382        .prepare =      snd_via8233_playback_prepare,
1383        .trigger =      snd_via82xx_pcm_trigger,
1384        .pointer =      snd_via8233_pcm_pointer,
1385        .page =         snd_pcm_sgbuf_ops_page,
1386};
1387
1388/* via823x multi-channel playback callbacks */
1389static struct snd_pcm_ops snd_via8233_multi_ops = {
1390        .open =         snd_via8233_multi_open,
1391        .close =        snd_via82xx_pcm_close,
1392        .ioctl =        snd_pcm_lib_ioctl,
1393        .hw_params =    snd_via82xx_hw_params,
1394        .hw_free =      snd_via82xx_hw_free,
1395        .prepare =      snd_via8233_multi_prepare,
1396        .trigger =      snd_via82xx_pcm_trigger,
1397        .pointer =      snd_via8233_pcm_pointer,
1398        .page =         snd_pcm_sgbuf_ops_page,
1399};
1400
1401/* via823x capture callbacks */
1402static struct snd_pcm_ops snd_via8233_capture_ops = {
1403        .open =         snd_via82xx_capture_open,
1404        .close =        snd_via82xx_pcm_close,
1405        .ioctl =        snd_pcm_lib_ioctl,
1406        .hw_params =    snd_via82xx_hw_params,
1407        .hw_free =      snd_via82xx_hw_free,
1408        .prepare =      snd_via8233_capture_prepare,
1409        .trigger =      snd_via82xx_pcm_trigger,
1410        .pointer =      snd_via8233_pcm_pointer,
1411        .page =         snd_pcm_sgbuf_ops_page,
1412};
1413
1414
1415static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1416                        int shadow_pos, int direction)
1417{
1418        chip->devs[idx].reg_offset = reg_offset;
1419        chip->devs[idx].shadow_shift = shadow_pos * 4;
1420        chip->devs[idx].direction = direction;
1421        chip->devs[idx].port = chip->port + reg_offset;
1422}
1423
1424/*
1425 * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1426 */
1427static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1428{
1429        struct snd_pcm *pcm;
1430        int i, err;
1431
1432        chip->playback_devno = 0;       /* x 4 */
1433        chip->multi_devno = 4;          /* x 1 */
1434        chip->capture_devno = 5;        /* x 2 */
1435        chip->num_devs = 7;
1436        chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1437
1438        /* PCM #0:  4 DSX playbacks and 1 capture */
1439        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1440        if (err < 0)
1441                return err;
1442        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1443        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1444        pcm->private_data = chip;
1445        strcpy(pcm->name, chip->card->shortname);
1446        chip->pcms[0] = pcm;
1447        /* set up playbacks */
1448        for (i = 0; i < 4; i++)
1449                init_viadev(chip, i, 0x10 * i, i, 0);
1450        /* capture */
1451        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1452
1453        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1454                                              snd_dma_pci_data(chip->pci),
1455                                              64*1024, VIA_MAX_BUFSIZE);
1456
1457        /* PCM #1:  multi-channel playback and 2nd capture */
1458        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1459        if (err < 0)
1460                return err;
1461        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1462        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1463        pcm->private_data = chip;
1464        strcpy(pcm->name, chip->card->shortname);
1465        chip->pcms[1] = pcm;
1466        /* set up playback */
1467        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1468        /* set up capture */
1469        init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1470
1471        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1472                                              snd_dma_pci_data(chip->pci),
1473                                              64*1024, VIA_MAX_BUFSIZE);
1474        return 0;
1475}
1476
1477/*
1478 * create pcm instances for VIA8233A
1479 */
1480static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1481{
1482        struct snd_pcm *pcm;
1483        int err;
1484
1485        chip->multi_devno = 0;
1486        chip->playback_devno = 1;
1487        chip->capture_devno = 2;
1488        chip->num_devs = 3;
1489        chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1490
1491        /* PCM #0:  multi-channel playback and capture */
1492        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1493        if (err < 0)
1494                return err;
1495        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1496        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1497        pcm->private_data = chip;
1498        strcpy(pcm->name, chip->card->shortname);
1499        chip->pcms[0] = pcm;
1500        /* set up playback */
1501        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1502        /* capture */
1503        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1504
1505        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1506                                              snd_dma_pci_data(chip->pci),
1507                                              64*1024, VIA_MAX_BUFSIZE);
1508
1509        /* SPDIF supported? */
1510        if (! ac97_can_spdif(chip->ac97))
1511                return 0;
1512
1513        /* PCM #1:  DXS3 playback (for spdif) */
1514        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1515        if (err < 0)
1516                return err;
1517        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1518        pcm->private_data = chip;
1519        strcpy(pcm->name, chip->card->shortname);
1520        chip->pcms[1] = pcm;
1521        /* set up playback */
1522        init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1523
1524        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1525                                              snd_dma_pci_data(chip->pci),
1526                                              64*1024, VIA_MAX_BUFSIZE);
1527        return 0;
1528}
1529
1530/*
1531 * create a pcm instance for via686a/b
1532 */
1533static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1534{
1535        struct snd_pcm *pcm;
1536        int err;
1537
1538        chip->playback_devno = 0;
1539        chip->capture_devno = 1;
1540        chip->num_devs = 2;
1541        chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1542
1543        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1544        if (err < 0)
1545                return err;
1546        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1547        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1548        pcm->private_data = chip;
1549        strcpy(pcm->name, chip->card->shortname);
1550        chip->pcms[0] = pcm;
1551        init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1552        init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1553
1554        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1555                                              snd_dma_pci_data(chip->pci),
1556                                              64*1024, VIA_MAX_BUFSIZE);
1557        return 0;
1558}
1559
1560
1561/*
1562 *  Mixer part
1563 */
1564
1565static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1566                                           struct snd_ctl_elem_info *uinfo)
1567{
1568        /* formerly they were "Line" and "Mic", but it looks like that they
1569         * have nothing to do with the actual physical connections...
1570         */
1571        static char *texts[2] = {
1572                "Input1", "Input2"
1573        };
1574        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1575        uinfo->count = 1;
1576        uinfo->value.enumerated.items = 2;
1577        if (uinfo->value.enumerated.item >= 2)
1578                uinfo->value.enumerated.item = 1;
1579        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1580        return 0;
1581}
1582
1583static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1584                                          struct snd_ctl_elem_value *ucontrol)
1585{
1586        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1587        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1588        ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1589        return 0;
1590}
1591
1592static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1593                                          struct snd_ctl_elem_value *ucontrol)
1594{
1595        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1596        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1597        u8 val, oval;
1598
1599        spin_lock_irq(&chip->reg_lock);
1600        oval = inb(port);
1601        val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1602        if (ucontrol->value.enumerated.item[0])
1603                val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1604        if (val != oval)
1605                outb(val, port);
1606        spin_unlock_irq(&chip->reg_lock);
1607        return val != oval;
1608}
1609
1610static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1611        .name = "Input Source Select",
1612        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1613        .info = snd_via8233_capture_source_info,
1614        .get = snd_via8233_capture_source_get,
1615        .put = snd_via8233_capture_source_put,
1616};
1617
1618#define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1619
1620static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1621                                      struct snd_ctl_elem_value *ucontrol)
1622{
1623        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1624        u8 val;
1625
1626        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1627        ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1628        return 0;
1629}
1630
1631static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1632                                      struct snd_ctl_elem_value *ucontrol)
1633{
1634        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1635        u8 val, oval;
1636
1637        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1638        val = oval & ~VIA8233_SPDIF_DX3;
1639        if (ucontrol->value.integer.value[0])
1640                val |= VIA8233_SPDIF_DX3;
1641        /* save the spdif flag for rate filtering */
1642        chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1643        if (val != oval) {
1644                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1645                return 1;
1646        }
1647        return 0;
1648}
1649
1650static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1651        .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1652        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1653        .info = snd_via8233_dxs3_spdif_info,
1654        .get = snd_via8233_dxs3_spdif_get,
1655        .put = snd_via8233_dxs3_spdif_put,
1656};
1657
1658static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1659                                       struct snd_ctl_elem_info *uinfo)
1660{
1661        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1662        uinfo->count = 2;
1663        uinfo->value.integer.min = 0;
1664        uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1665        return 0;
1666}
1667
1668static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1669                                      struct snd_ctl_elem_value *ucontrol)
1670{
1671        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1672        unsigned int idx = kcontrol->id.subdevice;
1673
1674        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1675        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1676        return 0;
1677}
1678
1679static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1680                                         struct snd_ctl_elem_value *ucontrol)
1681{
1682        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1683        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1684        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1685        return 0;
1686}
1687
1688static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1689                                      struct snd_ctl_elem_value *ucontrol)
1690{
1691        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1692        unsigned int idx = kcontrol->id.subdevice;
1693        unsigned long port = chip->port + 0x10 * idx;
1694        unsigned char val;
1695        int i, change = 0;
1696
1697        for (i = 0; i < 2; i++) {
1698                val = ucontrol->value.integer.value[i];
1699                if (val > VIA_DXS_MAX_VOLUME)
1700                        val = VIA_DXS_MAX_VOLUME;
1701                val = VIA_DXS_MAX_VOLUME - val;
1702                change |= val != chip->playback_volume[idx][i];
1703                if (change) {
1704                        chip->playback_volume[idx][i] = val;
1705                        outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1706                }
1707        }
1708        return change;
1709}
1710
1711static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1712                                         struct snd_ctl_elem_value *ucontrol)
1713{
1714        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1715        unsigned int idx;
1716        unsigned char val;
1717        int i, change = 0;
1718
1719        for (i = 0; i < 2; i++) {
1720                val = ucontrol->value.integer.value[i];
1721                if (val > VIA_DXS_MAX_VOLUME)
1722                        val = VIA_DXS_MAX_VOLUME;
1723                val = VIA_DXS_MAX_VOLUME - val;
1724                if (val != chip->playback_volume_c[i]) {
1725                        change = 1;
1726                        chip->playback_volume_c[i] = val;
1727                        for (idx = 0; idx < 4; idx++) {
1728                                unsigned long port = chip->port + 0x10 * idx;
1729                                chip->playback_volume[idx][i] = val;
1730                                outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1731                        }
1732                }
1733        }
1734        return change;
1735}
1736
1737static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1738
1739static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1740        .name = "PCM Playback Volume",
1741        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1742        .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1743                   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1744        .info = snd_via8233_dxs_volume_info,
1745        .get = snd_via8233_pcmdxs_volume_get,
1746        .put = snd_via8233_pcmdxs_volume_put,
1747        .tlv = { .p = db_scale_dxs }
1748};
1749
1750static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1751        .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1752        .device = 0,
1753        /* .subdevice set later */
1754        .name = "PCM Playback Volume",
1755        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1756                  SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1757                  SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1758        .info = snd_via8233_dxs_volume_info,
1759        .get = snd_via8233_dxs_volume_get,
1760        .put = snd_via8233_dxs_volume_put,
1761        .tlv = { .p = db_scale_dxs }
1762};
1763
1764/*
1765 */
1766
1767static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1768{
1769        struct via82xx *chip = bus->private_data;
1770        chip->ac97_bus = NULL;
1771}
1772
1773static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1774{
1775        struct via82xx *chip = ac97->private_data;
1776        chip->ac97 = NULL;
1777}
1778
1779static struct ac97_quirk ac97_quirks[] = {
1780        {
1781                .subvendor = 0x1106,
1782                .subdevice = 0x4161,
1783                .codec_id = 0x56494161, /* VT1612A */
1784                .name = "Soltek SL-75DRV5",
1785                .type = AC97_TUNE_NONE
1786        },
1787        {       /* FIXME: which codec? */
1788                .subvendor = 0x1106,
1789                .subdevice = 0x4161,
1790                .name = "ASRock K7VT2",
1791                .type = AC97_TUNE_HP_ONLY
1792        },
1793        {
1794                .subvendor = 0x1019,
1795                .subdevice = 0x0a81,
1796                .name = "ECS K7VTA3",
1797                .type = AC97_TUNE_HP_ONLY
1798        },
1799        {
1800                .subvendor = 0x1019,
1801                .subdevice = 0x0a85,
1802                .name = "ECS L7VMM2",
1803                .type = AC97_TUNE_HP_ONLY
1804        },
1805        {
1806                .subvendor = 0x1019,
1807                .subdevice = 0x1841,
1808                .name = "ECS K7VTA3",
1809                .type = AC97_TUNE_HP_ONLY
1810        },
1811        {
1812                .subvendor = 0x1849,
1813                .subdevice = 0x3059,
1814                .name = "ASRock K7VM2",
1815                .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1816        },
1817        {
1818                .subvendor = 0x14cd,
1819                .subdevice = 0x7002,
1820                .name = "Unknown",
1821                .type = AC97_TUNE_ALC_JACK
1822        },
1823        {
1824                .subvendor = 0x1071,
1825                .subdevice = 0x8590,
1826                .name = "Mitac Mobo",
1827                .type = AC97_TUNE_ALC_JACK
1828        },
1829        {
1830                .subvendor = 0x161f,
1831                .subdevice = 0x202b,
1832                .name = "Arima Notebook",
1833                .type = AC97_TUNE_HP_ONLY,
1834        },
1835        {
1836                .subvendor = 0x161f,
1837                .subdevice = 0x2032,
1838                .name = "Targa Traveller 811",
1839                .type = AC97_TUNE_HP_ONLY,
1840        },
1841        {
1842                .subvendor = 0x161f,
1843                .subdevice = 0x2032,
1844                .name = "m680x",
1845                .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1846        },
1847        {
1848                .subvendor = 0x1297,
1849                .subdevice = 0xa232,
1850                .name = "Shuttle AK32VN",
1851                .type = AC97_TUNE_HP_ONLY
1852        },
1853        { } /* terminator */
1854};
1855
1856static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1857{
1858        struct snd_ac97_template ac97;
1859        int err;
1860        static struct snd_ac97_bus_ops ops = {
1861                .write = snd_via82xx_codec_write,
1862                .read = snd_via82xx_codec_read,
1863                .wait = snd_via82xx_codec_wait,
1864        };
1865
1866        if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1867                return err;
1868        chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1869        chip->ac97_bus->clock = chip->ac97_clock;
1870
1871        memset(&ac97, 0, sizeof(ac97));
1872        ac97.private_data = chip;
1873        ac97.private_free = snd_via82xx_mixer_free_ac97;
1874        ac97.pci = chip->pci;
1875        ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1876        if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1877                return err;
1878
1879        snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1880
1881        if (chip->chip_type != TYPE_VIA686) {
1882                /* use slot 10/11 */
1883                snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1884        }
1885
1886        return 0;
1887}
1888
1889#ifdef SUPPORT_JOYSTICK
1890#define JOYSTICK_ADDR   0x200
1891static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1892{
1893        struct gameport *gp;
1894        struct resource *r;
1895
1896        if (!joystick)
1897                return -ENODEV;
1898
1899        r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1900        if (!r) {
1901                printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1902                       JOYSTICK_ADDR);
1903                return -EBUSY;
1904        }
1905
1906        chip->gameport = gp = gameport_allocate_port();
1907        if (!gp) {
1908                printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1909                release_and_free_resource(r);
1910                return -ENOMEM;
1911        }
1912
1913        gameport_set_name(gp, "VIA686 Gameport");
1914        gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1915        gameport_set_dev_parent(gp, &chip->pci->dev);
1916        gp->io = JOYSTICK_ADDR;
1917        gameport_set_port_data(gp, r);
1918
1919        /* Enable legacy joystick port */
1920        *legacy |= VIA_FUNC_ENABLE_GAME;
1921        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1922
1923        gameport_register_port(chip->gameport);
1924
1925        return 0;
1926}
1927
1928static void snd_via686_free_gameport(struct via82xx *chip)
1929{
1930        if (chip->gameport) {
1931                struct resource *r = gameport_get_port_data(chip->gameport);
1932
1933                gameport_unregister_port(chip->gameport);
1934                chip->gameport = NULL;
1935                release_and_free_resource(r);
1936        }
1937}
1938#else
1939static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1940{
1941        return -ENOSYS;
1942}
1943static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1944#endif
1945
1946
1947/*
1948 *
1949 */
1950
1951static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1952{
1953        int i, err, caps;
1954        unsigned char val;
1955
1956        caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1957        for (i = 0; i < caps; i++) {
1958                snd_via8233_capture_source.index = i;
1959                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1960                if (err < 0)
1961                        return err;
1962        }
1963        if (ac97_can_spdif(chip->ac97)) {
1964                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1965                if (err < 0)
1966                        return err;
1967        }
1968        if (chip->chip_type != TYPE_VIA8233A) {
1969                /* when no h/w PCM volume control is found, use DXS volume control
1970                 * as the PCM vol control
1971                 */
1972                struct snd_ctl_elem_id sid;
1973                memset(&sid, 0, sizeof(sid));
1974                strcpy(sid.name, "PCM Playback Volume");
1975                sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1976                if (! snd_ctl_find_id(chip->card, &sid)) {
1977                        snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1978                        err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1979                        if (err < 0)
1980                                return err;
1981                }
1982                else /* Using DXS when PCM emulation is enabled is really weird */
1983                {
1984                        for (i = 0; i < 4; ++i) {
1985                                struct snd_kcontrol *kctl;
1986
1987                                kctl = snd_ctl_new1(
1988                                        &snd_via8233_dxs_volume_control, chip);
1989                                if (!kctl)
1990                                        return -ENOMEM;
1991                                kctl->id.subdevice = i;
1992                                err = snd_ctl_add(chip->card, kctl);
1993                                if (err < 0)
1994                                        return err;
1995                                chip->dxs_controls[i] = kctl;
1996                        }
1997                }
1998        }
1999        /* select spdif data slot 10/11 */
2000        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
2001        val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2002        val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2003        pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
2004
2005        return 0;
2006}
2007
2008static int __devinit snd_via686_init_misc(struct via82xx *chip)
2009{
2010        unsigned char legacy, legacy_cfg;
2011        int rev_h = 0;
2012
2013        legacy = chip->old_legacy;
2014        legacy_cfg = chip->old_legacy_cfg;
2015        legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
2016        legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
2017        if (chip->revision >= VIA_REV_686_H) {
2018                rev_h = 1;
2019                if (mpu_port >= 0x200) {        /* force MIDI */
2020                        mpu_port &= 0xfffc;
2021                        pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
2022#ifdef CONFIG_PM
2023                        chip->mpu_port_saved = mpu_port;
2024#endif
2025                } else {
2026                        mpu_port = pci_resource_start(chip->pci, 2);
2027                }
2028        } else {
2029                switch (mpu_port) {     /* force MIDI */
2030                case 0x300:
2031                case 0x310:
2032                case 0x320:
2033                case 0x330:
2034                        legacy_cfg &= ~(3 << 2);
2035                        legacy_cfg |= (mpu_port & 0x0030) >> 2;
2036                        break;
2037                default:                        /* no, use BIOS settings */
2038                        if (legacy & VIA_FUNC_ENABLE_MIDI)
2039                                mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2040                        break;
2041                }
2042        }
2043        if (mpu_port >= 0x200 &&
2044            (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
2045            != NULL) {
2046                if (rev_h)
2047                        legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
2048                legacy |= VIA_FUNC_ENABLE_MIDI;
2049        } else {
2050                if (rev_h)
2051                        legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
2052                legacy &= ~VIA_FUNC_ENABLE_MIDI;
2053                mpu_port = 0;
2054        }
2055
2056        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2057        pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2058        if (chip->mpu_res) {
2059                if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2060                                        mpu_port, MPU401_INFO_INTEGRATED,
2061                                        chip->irq, 0, &chip->rmidi) < 0) {
2062                        printk(KERN_WARNING "unable to initialize MPU-401"
2063                               " at 0x%lx, skipping\n", mpu_port);
2064                        legacy &= ~VIA_FUNC_ENABLE_MIDI;
2065                } else {
2066                        legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2067                }
2068                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2069        }
2070
2071        snd_via686_create_gameport(chip, &legacy);
2072
2073#ifdef CONFIG_PM
2074        chip->legacy_saved = legacy;
2075        chip->legacy_cfg_saved = legacy_cfg;
2076#endif
2077
2078        return 0;
2079}
2080
2081
2082/*
2083 * proc interface
2084 */
2085static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2086                                  struct snd_info_buffer *buffer)
2087{
2088        struct via82xx *chip = entry->private_data;
2089        int i;
2090        
2091        snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2092        for (i = 0; i < 0xa0; i += 4) {
2093                snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2094        }
2095}
2096
2097static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2098{
2099        struct snd_info_entry *entry;
2100
2101        if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2102                snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
2103}
2104
2105/*
2106 *
2107 */
2108
2109static int snd_via82xx_chip_init(struct via82xx *chip)
2110{
2111        unsigned int val;
2112        unsigned long end_time;
2113        unsigned char pval;
2114
2115#if 0 /* broken on K7M? */
2116        if (chip->chip_type == TYPE_VIA686)
2117                /* disable all legacy ports */
2118                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2119#endif
2120        pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2121        if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2122                /* deassert ACLink reset, force SYNC */
2123                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2124                                      VIA_ACLINK_CTRL_ENABLE |
2125                                      VIA_ACLINK_CTRL_RESET |
2126                                      VIA_ACLINK_CTRL_SYNC);
2127                udelay(100);
2128#if 1 /* FIXME: should we do full reset here for all chip models? */
2129                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2130                udelay(100);
2131#else
2132                /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2133                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2134                                      VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2135                udelay(2);
2136#endif
2137                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2138                /* note - FM data out has trouble with non VRA codecs !! */
2139                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2140                udelay(100);
2141        }
2142        
2143        /* Make sure VRA is enabled, in case we didn't do a
2144         * complete codec reset, above */
2145        pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2146        if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2147                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2148                /* note - FM data out has trouble with non VRA codecs !! */
2149                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2150                udelay(100);
2151        }
2152
2153        /* wait until codec ready */
2154        end_time = jiffies + msecs_to_jiffies(750);
2155        do {
2156                pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2157                if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2158                        break;
2159                schedule_timeout_uninterruptible(1);
2160        } while (time_before(jiffies, end_time));
2161
2162        if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2163                snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2164
2165#if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2166        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2167                                 VIA_REG_AC97_SECONDARY_VALID |
2168                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2169        end_time = jiffies + msecs_to_jiffies(750);
2170        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2171                                 VIA_REG_AC97_SECONDARY_VALID |
2172                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2173        do {
2174                if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2175                        chip->ac97_secondary = 1;
2176                        goto __ac97_ok2;
2177                }
2178                schedule_timeout_uninterruptible(1);
2179        } while (time_before(jiffies, end_time));
2180        /* This is ok, the most of motherboards have only one codec */
2181
2182      __ac97_ok2:
2183#endif
2184
2185        if (chip->chip_type == TYPE_VIA686) {
2186                /* route FM trap to IRQ, disable FM trap */
2187                pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2188                /* disable all GPI interrupts */
2189                outl(0, VIAREG(chip, GPI_INTR));
2190        }
2191
2192        if (chip->chip_type != TYPE_VIA686) {
2193                /* Workaround for Award BIOS bug:
2194                 * DXS channels don't work properly with VRA if MC97 is disabled.
2195                 */
2196                struct pci_dev *pci;
2197                pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2198                if (pci) {
2199                        unsigned char data;
2200                        pci_read_config_byte(pci, 0x44, &data);
2201                        pci_write_config_byte(pci, 0x44, data | 0x40);
2202                        pci_dev_put(pci);
2203                }
2204        }
2205
2206        if (chip->chip_type != TYPE_VIA8233A) {
2207                int i, idx;
2208                for (idx = 0; idx < 4; idx++) {
2209                        unsigned long port = chip->port + 0x10 * idx;
2210                        for (i = 0; i < 2; i++) {
2211                                chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2212                                outb(chip->playback_volume_c[i],
2213                                     port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2214                        }
2215                }
2216        }
2217
2218        return 0;
2219}
2220
2221#ifdef CONFIG_PM
2222/*
2223 * power management
2224 */
2225static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
2226{
2227        struct snd_card *card = pci_get_drvdata(pci);
2228        struct via82xx *chip = card->private_data;
2229        int i;
2230
2231        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2232        for (i = 0; i < 2; i++)
2233                snd_pcm_suspend_all(chip->pcms[i]);
2234        for (i = 0; i < chip->num_devs; i++)
2235                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2236        synchronize_irq(chip->irq);
2237        snd_ac97_suspend(chip->ac97);
2238
2239        /* save misc values */
2240        if (chip->chip_type != TYPE_VIA686) {
2241                pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2242                chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2243                chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2244        }
2245
2246        pci_disable_device(pci);
2247        pci_save_state(pci);
2248        pci_set_power_state(pci, pci_choose_state(pci, state));
2249        return 0;
2250}
2251
2252static int snd_via82xx_resume(struct pci_dev *pci)
2253{
2254        struct snd_card *card = pci_get_drvdata(pci);
2255        struct via82xx *chip = card->private_data;
2256        int i;
2257
2258        pci_set_power_state(pci, PCI_D0);
2259        pci_restore_state(pci);
2260        if (pci_enable_device(pci) < 0) {
2261                printk(KERN_ERR "via82xx: pci_enable_device failed, "
2262                       "disabling device\n");
2263                snd_card_disconnect(card);
2264                return -EIO;
2265        }
2266        pci_set_master(pci);
2267
2268        snd_via82xx_chip_init(chip);
2269
2270        if (chip->chip_type == TYPE_VIA686) {
2271                if (chip->mpu_port_saved)
2272                        pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2273                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2274                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2275        } else {
2276                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2277                outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2278                outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2279        }
2280
2281        snd_ac97_resume(chip->ac97);
2282
2283        for (i = 0; i < chip->num_devs; i++)
2284                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2285
2286        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2287        return 0;
2288}
2289#endif /* CONFIG_PM */
2290
2291static int snd_via82xx_free(struct via82xx *chip)
2292{
2293        unsigned int i;
2294
2295        if (chip->irq < 0)
2296                goto __end_hw;
2297        /* disable interrupts */
2298        for (i = 0; i < chip->num_devs; i++)
2299                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2300
2301        if (chip->irq >= 0)
2302                free_irq(chip->irq, chip);
2303 __end_hw:
2304        release_and_free_resource(chip->mpu_res);
2305        pci_release_regions(chip->pci);
2306
2307        if (chip->chip_type == TYPE_VIA686) {
2308                snd_via686_free_gameport(chip);
2309                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2310                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2311        }
2312        pci_disable_device(chip->pci);
2313        kfree(chip);
2314        return 0;
2315}
2316
2317static int snd_via82xx_dev_free(struct snd_device *device)
2318{
2319        struct via82xx *chip = device->device_data;
2320        return snd_via82xx_free(chip);
2321}
2322
2323static int __devinit snd_via82xx_create(struct snd_card *card,
2324                                        struct pci_dev *pci,
2325                                        int chip_type,
2326                                        int revision,
2327                                        unsigned int ac97_clock,
2328                                        struct via82xx ** r_via)
2329{
2330        struct via82xx *chip;
2331        int err;
2332        static struct snd_device_ops ops = {
2333                .dev_free =     snd_via82xx_dev_free,
2334        };
2335
2336        if ((err = pci_enable_device(pci)) < 0)
2337                return err;
2338
2339        if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2340                pci_disable_device(pci);
2341                return -ENOMEM;
2342        }
2343
2344        chip->chip_type = chip_type;
2345        chip->revision = revision;
2346
2347        spin_lock_init(&chip->reg_lock);
2348        spin_lock_init(&chip->rates[0].lock);
2349        spin_lock_init(&chip->rates[1].lock);
2350        chip->card = card;
2351        chip->pci = pci;
2352        chip->irq = -1;
2353
2354        pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2355        pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2356        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2357                              chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2358
2359        if ((err = pci_request_regions(pci, card->driver)) < 0) {
2360                kfree(chip);
2361                pci_disable_device(pci);
2362                return err;
2363        }
2364        chip->port = pci_resource_start(pci, 0);
2365        if (request_irq(pci->irq,
2366                        chip_type == TYPE_VIA8233 ?
2367                        snd_via8233_interrupt : snd_via686_interrupt,
2368                        IRQF_SHARED,
2369                        card->driver, chip)) {
2370                snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2371                snd_via82xx_free(chip);
2372                return -EBUSY;
2373        }
2374        chip->irq = pci->irq;
2375        if (ac97_clock >= 8000 && ac97_clock <= 48000)
2376                chip->ac97_clock = ac97_clock;
2377        synchronize_irq(chip->irq);
2378
2379        if ((err = snd_via82xx_chip_init(chip)) < 0) {
2380                snd_via82xx_free(chip);
2381                return err;
2382        }
2383
2384        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2385                snd_via82xx_free(chip);
2386                return err;
2387        }
2388
2389        /* The 8233 ac97 controller does not implement the master bit
2390         * in the pci command register. IMHO this is a violation of the PCI spec.
2391         * We call pci_set_master here because it does not hurt. */
2392        pci_set_master(pci);
2393
2394        snd_card_set_dev(card, &pci->dev);
2395
2396        *r_via = chip;
2397        return 0;
2398}
2399
2400struct via823x_info {
2401        int revision;
2402        char *name;
2403        int type;
2404};
2405static struct via823x_info via823x_cards[] __devinitdata = {
2406        { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2407        { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2408        { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2409        { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2410        { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2411        { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2412        { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2413};
2414
2415/*
2416 * auto detection of DXS channel supports.
2417 */
2418
2419static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
2420        SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2421        SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2422        SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2423        SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2424        SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2425        SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2426        SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2427        SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2428        SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2429        SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2430        SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2431        SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2432        SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2433        SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2434        SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2435        SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2436        SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2437        SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2438        SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2439        SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2440        SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2441        SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2442        SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2443        SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2444        SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2445        SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2446        SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2447        SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2448        SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2449        SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2450        SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2451        SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2452        SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2453        SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2454        SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2455        SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2456        SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2457        SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2458        SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2459        SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2460        { } /* terminator */
2461};
2462
2463static int __devinit check_dxs_list(struct pci_dev *pci, int revision)
2464{
2465        const struct snd_pci_quirk *w;
2466
2467        w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2468        if (w) {
2469                snd_printdd(KERN_INFO "via82xx: DXS white list for %s found\n",
2470                            w->name);
2471                return w->value;
2472        }
2473
2474        /* for newer revision, default to DXS_SRC */
2475        if (revision >= VIA_REV_8235)
2476                return VIA_DXS_SRC;
2477
2478        /*
2479         * not detected, try 48k rate only to be sure.
2480         */
2481        printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2482        printk(KERN_INFO "         Please try dxs_support=5 option\n");
2483        printk(KERN_INFO "         and report if it works on your machine.\n");
2484        printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2485        return VIA_DXS_48K;
2486};
2487
2488static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2489                                       const struct pci_device_id *pci_id)
2490{
2491        struct snd_card *card;
2492        struct via82xx *chip;
2493        int chip_type = 0, card_type;
2494        unsigned int i;
2495        int err;
2496
2497        err = snd_card_create(index, id, THIS_MODULE, 0, &card);
2498        if (err < 0)
2499                return err;
2500
2501        card_type = pci_id->driver_data;
2502        switch (card_type) {
2503        case TYPE_CARD_VIA686:
2504                strcpy(card->driver, "VIA686A");
2505                sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2506                chip_type = TYPE_VIA686;
2507                break;
2508        case TYPE_CARD_VIA8233:
2509                chip_type = TYPE_VIA8233;
2510                sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2511                for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2512                        if (pci->revision == via823x_cards[i].revision) {
2513                                chip_type = via823x_cards[i].type;
2514                                strcpy(card->shortname, via823x_cards[i].name);
2515                                break;
2516                        }
2517                }
2518                if (chip_type != TYPE_VIA8233A) {
2519                        if (dxs_support == VIA_DXS_AUTO)
2520                                dxs_support = check_dxs_list(pci, pci->revision);
2521                        /* force to use VIA8233 or 8233A model according to
2522                         * dxs_support module option
2523                         */
2524                        if (dxs_support == VIA_DXS_DISABLE)
2525                                chip_type = TYPE_VIA8233A;
2526                        else
2527                                chip_type = TYPE_VIA8233;
2528                }
2529                if (chip_type == TYPE_VIA8233A)
2530                        strcpy(card->driver, "VIA8233A");
2531                else if (pci->revision >= VIA_REV_8237)
2532                        strcpy(card->driver, "VIA8237"); /* no slog assignment */
2533                else
2534                        strcpy(card->driver, "VIA8233");
2535                break;
2536        default:
2537                snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2538                err = -EINVAL;
2539                goto __error;
2540        }
2541                
2542        if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2543                                      ac97_clock, &chip)) < 0)
2544                goto __error;
2545        card->private_data = chip;
2546        if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2547                goto __error;
2548
2549        if (chip_type == TYPE_VIA686) {
2550                if ((err = snd_via686_pcm_new(chip)) < 0 ||
2551                    (err = snd_via686_init_misc(chip)) < 0)
2552                        goto __error;
2553        } else {
2554                if (chip_type == TYPE_VIA8233A) {
2555                        if ((err = snd_via8233a_pcm_new(chip)) < 0)
2556                                goto __error;
2557                        // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2558                } else {
2559                        if ((err = snd_via8233_pcm_new(chip)) < 0)
2560                                goto __error;
2561                        if (dxs_support == VIA_DXS_48K)
2562                                chip->dxs_fixed = 1;
2563                        else if (dxs_support == VIA_DXS_NO_VRA)
2564                                chip->no_vra = 1;
2565                        else if (dxs_support == VIA_DXS_SRC) {
2566                                chip->no_vra = 1;
2567                                chip->dxs_src = 1;
2568                        }
2569                }
2570                if ((err = snd_via8233_init_misc(chip)) < 0)
2571                        goto __error;
2572        }
2573
2574        /* disable interrupts */
2575        for (i = 0; i < chip->num_devs; i++)
2576                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2577
2578        snprintf(card->longname, sizeof(card->longname),
2579                 "%s with %s at %#lx, irq %d", card->shortname,
2580                 snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2581
2582        snd_via82xx_proc_init(chip);
2583
2584        if ((err = snd_card_register(card)) < 0) {
2585                snd_card_free(card);
2586                return err;
2587        }
2588        pci_set_drvdata(pci, card);
2589        return 0;
2590
2591 __error:
2592        snd_card_free(card);
2593        return err;
2594}
2595
2596static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2597{
2598        snd_card_free(pci_get_drvdata(pci));
2599        pci_set_drvdata(pci, NULL);
2600}
2601
2602static struct pci_driver driver = {
2603        .name = "VIA 82xx Audio",
2604        .id_table = snd_via82xx_ids,
2605        .probe = snd_via82xx_probe,
2606        .remove = __devexit_p(snd_via82xx_remove),
2607#ifdef CONFIG_PM
2608        .suspend = snd_via82xx_suspend,
2609        .resume = snd_via82xx_resume,
2610#endif
2611};
2612
2613static int __init alsa_card_via82xx_init(void)
2614{
2615        return pci_register_driver(&driver);
2616}
2617
2618static void __exit alsa_card_via82xx_exit(void)
2619{
2620        pci_unregister_driver(&driver);
2621}
2622
2623module_init(alsa_card_via82xx_init)
2624module_exit(alsa_card_via82xx_exit)
2625